Opthalmic lens made of organic glass, comprising an...

Details Opthalmic lens made of organic glass, comprising an... Opthalmic lens made of organic glass, comprising an...

G - Physics

02

B

G02B 1/10 (2006.01) C08J 7/04 (2006.01) C09D 151/06 (2006.01) C09D 183/04 (2006.01)

Patent

CA 2330496

The inventive lens comprises an organic glass substrate having front and rear main surfaces, at least one primer coat deposited on at least one of the main surfaces of the substrate, whereby said primer coat consists of a mixture of at least biophasic particles, whereby a first phase is composed of a P1 soft-character polymer with a glass transition temperature (Tg) of less than 20 DEG C and a second phase is composed of a hard-character P2 polymer with a glass transition temperature (Tg) of more than 50 DEG C and at least one coat of an anti-abrasive covering composition deposited on the primer. The invention can be used for eye glasses.

La lentille ophtalmique selon l'invention comprend un substrat en verre organique ayant des faces principales avant et arrière, au moins une couche de primaire déposée sur au moins une des faces principales du substrat, ladite couche de primaire comprenant un agrégat de particules au moins biphasiques dont une première phase est constituée d'un polymère P1 à caractère mou ayant une température de transition vitreuse (Tg) inférieure à 20 °C et une deuxième phase est constituée par un polymère P2 à caractère dur ayant une température de transition vitreuse (Tg) supérieure à 50 °C, et au moins une couche d'une composition de revêtement anti-abrasion déposée sur la couche de primaire. Application aux verres de lunettes.

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